While working with Exchange 2010 at a customer site, I came across the error message below while launching the Exchange 2010 Management Console (EMC) and navigating to Recipient Configuration –> Mailbox.

An error caused a change in the current set of domain controllers. It was running the command “Get-Recipient –PropertySet ConsoleLargeSet –ResultSize ‘1000’ –SortBy DisplayName –RecipientType “UserMailbox”

AD guys confirmed that one or more domain controllers were decommissioned before I tried launching the EMC. Few GCs were online while I received the error as well. After searching on the internet and finding number of “fixes”, the one that worked for me was to delete the “Exchange Management Console” file from my profile.

The file is located in C:UsersUserAppDataRoamingMicrosoftMMC

After deleting the file, I was able to work with the EMC without any errors!